_{1. √X(√}9  4/3 ) = √25
Square both sides of the equation:
X ( 3  4/3 ) = 25
X = 25 / ( 3  4/3 )
X = 25 /( 5/3)
X = 75/5 = 15
2.
( 4  3 √2 ) = 16  24 √2 + 18 = 34  24 √2 ( Use of the relation of ( a ±b)^{2} = a^{2} + b^{2
}±2ab
3.
√( 135b^{2} c^{3} d * √(5b^{2} d ) =
3bc √(15 cd ) * b √5d ) =
15b^{2} d c^{2}√(5c)
Jun 26

Parviz F.
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